Science ❯ Astrobiology ❯ Search for Extraterrestrial Life

Planetary Atmospheres

Habitability Criteria Chemical Signatures

JWST Finds Phosphine on Ancient Brown Dwarf, Matching Model Predictions

The measurement at roughly 100 parts per billion confirms abiotic formation in hydrogen-rich atmospheres.

Webb Telescope Rules Out Atmosphere on Earth-Sized Exoplanet TRAPPIST-1 d